Hyundai HL955 Manual page 114

Fault code Meaning of the fault code
(Hex) possible reason for fault detection
18
S.C. to battery voltage at customer specific
function No. 1 (ride control)
TCU detected a wrong voltage at the
output pin, that looks like a S.C. to battery
voltage
· Cable is defective and is contacted to
battery voltage
· Customer specific function No. 1 device
has an internal defect
· Connector pin is contacted to battery
voltage
19
O.C. at customer specific function No. 1
(ride control)
TCU detected a wrong voltage at the
output pin, that looks like a O.C. for this
output pin
· C a b l e i s d e fe c t i ve a n d h a s n o
connection to TCU
· Customer specific function No. 1 device
has an internal defect
· Connector has no connection to TCU
21
S.C. to battery voltage at clutch cut off
input
The measured voltage is too high:
· Cable is defective and is contacted to
battery voltage
· Clutch cut off sensor has an internal
defect
· Connector pin is contacted to battery
voltage
22
S.C. to ground or O.C. at clutch cut off
input
The measured voltage is too low:
·Cable is defective and is contacted to
vehicle ground
· Cable has no connection to TCU
· Clutch cut off sensor has an internal
defect
·Connector pin is contacted to vehicle
ground or is broken
25
S.C. to batter y voltage or O.C. at
transmission sump temperature sensor
input
The measured voltage is too high:
· Cable is defective and is contacted to
battery voltage
·Cable has no connection to TCU
·Temperature sensor has an internal
defect
· Connector pin is contacted to battery
voltage or is broken
※ Some fault codes are not applied to this machine.
Reaction of the TCU
Customer specific
Customer specific
Clutch cut off function is
disabled
OP mode : Normal
Clutch cut off function is
disabled
OP mode : Normal
No reaction, TCU use
default temperature
OP mode : Normal
3-58
Possible steps to repair
·
Check the cable from TCU to
customer specific function No. 1
device
·
C h e ck t h e c o n n e c t o r s f r o m
customer specific function No. 1 to
TCU
·
Check the resistance of customer
specific function No. 1 device
·
Check the cable from TCU to
customer specific function No. 1
device
·
C h e ck t h e c o n n e c t o r s f r o m
customer specific function No. 1
device to TCU
·
Check the resistance of customer
specific function No. 1 device
·
Check the cable from TCU to the
sensor
·
Check the connectors
·
Check the clutch cut off sensor
·
Check the cable from TCU to the
sensor
·
Check the connectors
·
Check the clutch cut off sensor
·
Check the cable from TCU to the
sensor
·
Check the connectors
·
Check the temperature sensor